Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1982-04-28
1985-04-09
Mayewsky, Volodymyr Y.
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
156 86, 174DIG8, 53557, 219528, 219544, G02B 514
Patent
active
045098204
ABSTRACT:
A protective packaging method of protecting the spliced portion of optical fibers, comprising the steps of providing a protective packaging assembly having a heat-shrinkable tube capable of shrinking in the radial direction thereof, an extended form of hot-melt adhesive disposed on the inner side of the heat-shrinkable tube, and an electrical resistance heating element so disposed on the inner side of the heat-shrinkable tube and extendedly in the axial direction of the heat-shrinkable tube as to be capable of heating both the heat-shrinkable tube and the extended form of hot-melt adhesive, and a space provided in the heat-shrinkable tube for allowing the passage of the optical fiber; placing the protective packaging assembly around the splice portion of the optical fiber which has been passed through the space; and supplying electric current through the electrical resistance heating element to heat-melt the hot-melt adhesive and to heat-shrink the heat-shrinkable tube for forming a reinforced unit including the spliced portion of the optical fiber and the electrical resistance heating element with the hot-melt adhesive acting as a sealant inside the heat-shrunk tube. A highly reliable reinforced portion is easily and rapidly formed which does not contain residual bubbles. The reinforced fiber is hardly broken and has little increase of transmission loss.
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"Fusion Splicing of Optical Fibers", by J. F. Balgleish, Electronics Letters, vol. 15, No. 1, pp. 32-34, Jan. 4, 1979.
Hoshino Mitsutoshi
Murata Norio
Yamakawa Shinzo
Mayewsky Volodymyr Y.
Nippon Telegraph & Telephone Public Corporation
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